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प्रश्न
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
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उत्तर
As diamond is extremely hard, it can be used to cut and grind other hard materials or metals. Hence, it is used in rock-drilling equipment to drill holes in the rocky layers of the Earth. Graphite being soft cannot be used to cut or grind.
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संबंधित प्रश्न
Write the number of covalent bonds in the molecule of butane, C4H10.
Explain why carbon forms compounds mainly by covalent bond.
Ethane, with the molecular formula C2H6 has ______.
Explain the bonding in methane molecule using electron dot structure.
State whether the following statement is true or false:
Diamond and graphite are the covalent compounds of carbon element (C)
What do you call the compounds having the same molecular formula but different structural arrangements of atoms?
What type of bond is present in oxygen molecule?
will CS2 conduct electricity or not?
give reason for your choice.
State the type of bonding in the following molecule.
Hydroxyl ion
Explain the following term with example.
Hetero atom in a carbon compound
Write answer as directed.
What causes the existance of very large number of carbon compound ?
Give examples for the following:
Two gaseous non polar compounds.
Explain the following:
Covalent compounds are generally gases or liquids or soft solids.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If the compound formed between A and B is melted and an electric current is passed through the molten compound, the element A will be obtained at the ______ and B at the ______ of the electrolytic cell.
Write scientific reason.
Carbon has the property of forming many compounds.
List two differences between the properties exhibited by covalent compounds and ionic compounds.
Which of the following are correct structural isomers of butane?
- \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - C - H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
\end{array}\] - \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - H}\\
|\phantom{.....}|\phantom{.....}|\\
\ce{H}\ce{H-C-H}\ce{H}\\
|\\
\ce{H}\\
\end{array}\] - \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - H}\\
|\phantom{.....}\backslash\phantom{..}|\\
\phantom{....}\ce{H}\phantom{......}\ce{C - H}\phantom{}\\
\phantom{.......}|\\
\phantom{.......}\ce{H}\\
\end{array}\] - \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\\
\ce{H - C - C - H}\\
|\phantom{....}|\\
\ce{H - C - C - H}\\
|\phantom{....}|\\
\ce{H}\phantom{...}\ce{H}\\
\end{array}\]
The table shows the electronic structures of four elements.
| Element | Electronic Structure |
| P | 2, 6 |
| Q | 2, 8, 1 |
| R | 2, 8, 7 |
| S | 2, 8, 8 |
- Identify which element(s) will form covalent bonds with carbon.
- “Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.
"Carbon prefers to share its valence electrons with other atoms of carbon or with atoms of other elements rather than gaining or losing the valence electrons in order to attain noble gas configuration." Give reasons to justify this statement.
In covalent compounds, the bond is formed due to ______ of electrons.
